CVE-2026-85921 — HIGH (8.2)

Vulnerability Description

Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.

CVSS Score

8.2

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-415

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85921

FAQ

What is CVE-2026-85921?

CVE-2026-85921 is a vulnerability with a CVSS score of 8.2 (HIGH). Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.

How severe is CVE-2026-85921?

CVE-2026-85921 has been rated HIGH with a CVSS base score of 8.2/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-85921?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.